Chapter 3 Processing files
Processing and its spin-offs – such as P5.js, Processing.js and Processing.py – are used by artists and designers for offline and online interactive and/or generative artefacts. They offer a new approach to programming.
Leonard. N, F. Santune, A. Way (2020) Web & Digital for Graphic Designers, Bloomsbury
You can download Processing from https://processing.org/